freebsd-skq/sys/mips/atheros/ar71xx_machdep.c
adrian af6717c229 Populate hw.model with the CPU model information.
Now you see something like:

# sysctl hw.model
hw.model: Atheros AR9330 rev 1

Tested:

* Carambola 2, AR9331 SoC
2015-07-14 05:14:10 +00:00

485 lines
12 KiB
C

/*-
* Copyright (c) 2009 Oleksandr Tymoshenko
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_ddb.h"
#include "opt_ar71xx.h"
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/cons.h>
#include <sys/kdb.h>
#include <sys/reboot.h>
#include <vm/vm.h>
#include <vm/vm_page.h>
#include <net/ethernet.h>
#include <machine/clock.h>
#include <machine/cpu.h>
#include <machine/cpuregs.h>
#include <machine/hwfunc.h>
#include <machine/md_var.h>
#include <machine/trap.h>
#include <machine/vmparam.h>
#include <mips/atheros/ar71xxreg.h>
#include <mips/atheros/ar71xx_setup.h>
#include <mips/atheros/ar71xx_cpudef.h>
#include <mips/atheros/ar71xx_macaddr.h>
#include <mips/sentry5/s5reg.h>
extern char edata[], end[];
/* 4KB static data aread to keep a copy of the bootload env until
the dynamic kenv is setup */
char boot1_env[4096];
/*
* We get a string in from Redboot with the all the arguments together,
* "foo=bar bar=baz". Split them up and save in kenv.
*/
static void
parse_argv(char *str)
{
char *n, *v;
while ((v = strsep(&str, " ")) != NULL) {
if (*v == '\0')
continue;
if (*v == '-') {
while (*v != '\0') {
v++;
switch (*v) {
case 'a': boothowto |= RB_ASKNAME; break;
case 'd': boothowto |= RB_KDB; break;
case 'g': boothowto |= RB_GDB; break;
case 's': boothowto |= RB_SINGLE; break;
case 'v': boothowto |= RB_VERBOSE; break;
}
}
} else {
n = strsep(&v, "=");
if (v == NULL)
kern_setenv(n, "1");
else
kern_setenv(n, v);
}
}
}
void
platform_cpu_init()
{
/* Nothing special */
}
void
platform_reset(void)
{
ar71xx_device_stop(RST_RESET_FULL_CHIP);
/* Wait for reset */
while(1)
;
}
/*
* Obtain the MAC address via the Redboot environment.
*/
static int
ar71xx_redboot_get_macaddr(void)
{
char *var;
int count = 0, i;
uint32_t macaddr[ETHER_ADDR_LEN];
uint8_t tmpmac[ETHER_ADDR_LEN];
/*
* "ethaddr" is passed via envp on RedBoot platforms
* "kmac" is passed via argv on RouterBOOT platforms
*/
if ((var = kern_getenv("ethaddr")) != NULL ||
(var = kern_getenv("kmac")) != NULL) {
count = sscanf(var, "%x%*c%x%*c%x%*c%x%*c%x%*c%x",
&macaddr[0], &macaddr[1],
&macaddr[2], &macaddr[3],
&macaddr[4], &macaddr[5]);
if (count < 6) {
memset(macaddr, 0,
sizeof(macaddr));
} else {
for (i = 0; i < ETHER_ADDR_LEN; i++)
tmpmac[i] = macaddr[i] & 0xff;
(void) ar71xx_mac_addr_init(ar71xx_board_mac_addr,
tmpmac,
0, /* offset */
0); /* is_local */
}
freeenv(var);
return (0);
}
return (-1);
}
#ifdef AR71XX_ENV_ROUTERBOOT
/*
* RouterBoot gives us the board memory in a command line argument.
*/
static int
ar71xx_routerboot_get_mem(int argc, char **argv)
{
int i, board_mem;
/*
* Protect ourselves from garbage in registers.
*/
if (!MIPS_IS_VALID_PTR(argv))
return (0);
for (i = 0; i < argc; i++) {
if (argv[i] == NULL)
continue;
if (strncmp(argv[i], "mem=", 4) == 0) {
if (sscanf(argv[i] + 4, "%dM", &board_mem) == 1)
return (btoc(board_mem * 1024 * 1024));
}
}
return (0);
}
#endif
/*
* Handle initialising the MAC address from a specific EEPROM
* offset.
*
* This is done during (very) early boot.
*
* hint.ar71xx.0.eeprom_mac_addr=<address to read from>
* hint.ar71xx.0.eeprom_mac_isascii=<0|1>
*/
static int
ar71xx_platform_read_eeprom_mac(void)
{
long eeprom_mac_addr = 0;
const char *mac;
int i, readascii = 0;
uint8_t macaddr[ETHER_ADDR_LEN];
if (resource_long_value("ar71xx", 0, "eeprom_mac_addr",
&eeprom_mac_addr) != 0)
return (-1);
/* get a pointer to the EEPROM MAC address */
mac = (const char *) MIPS_PHYS_TO_KSEG1(eeprom_mac_addr);
/* Check if it's ASCII or not */
if (resource_int_value("ar71xx", 0, "eeprom_mac_isascii",
&readascii) == 0 && readascii == 1) {
printf("ar71xx: Overriding MAC from EEPROM (ascii)\n");
for (i = 0; i < 6; i++) {
macaddr[i] = strtol(&(mac[i*3]), NULL, 16);
}
} else {
printf("ar71xx: Overriding MAC from EEPROM\n");
for (i = 0; i < 6; i++) {
macaddr[i] = mac[i];
}
}
/* Set the default board MAC */
(void) ar71xx_mac_addr_init(ar71xx_board_mac_addr,
macaddr,
0, /* offset */
0); /* is_local */
printf("ar71xx: Board MAC: %6D\n", ar71xx_board_mac_addr, ":");
return (0);
}
/*
* Populate a kenv hint for the given device based on the given
* MAC address and offset.
*
* Returns 0 if ok, < 0 on error.
*/
static int
ar71xx_platform_set_mac_hint(const char *dev, int unit,
const uint8_t *macaddr, int offset, int islocal)
{
char macstr[32];
uint8_t lclmac[ETHER_ADDR_LEN];
char devstr[32];
/* Initialise the MAC address, plus/minus the offset */
if (ar71xx_mac_addr_init(lclmac, macaddr, offset, islocal) != 0) {
return (-1);
}
/* Turn it into a string */
snprintf(macstr, 32, "%6D", lclmac, ":");
snprintf(devstr, 32, "hint.%s.%d.macaddr", dev, unit);
printf(" %s => %s\n", devstr, macstr);
/* Call setenv */
if (kern_setenv(devstr, macstr) != 0) {
printf("%s: failed to set hint (%s => %s)\n",
__func__,
devstr,
macstr);
return (-1);
}
return (0);
}
/*
* Iterate through the list of boot time hints that populate
* a device MAC address hint based on the "board" MAC address.
*
* ar71xx_mac_map.X.devid=<device id, eg ath>
* ar71xx_mac_map.X.unitid=<unit id, eg 0>
* ar71xx_mac_map.X.offset=<mac address value offset>
* ar71xx_mac_map.X.is_local=<1 or 0>
*/
static int
ar71xx_platform_check_mac_hints(void)
{
int i;
const char *devid;
int offset, is_local, unitid;
for (i = 0; i < 8; i++) {
if (resource_string_value("ar71xx_mac_map", i, "devid",
&devid) != 0)
break;
if (resource_int_value("ar71xx_mac_map", i, "unitid",
&unitid) != 0)
break;
if (resource_int_value("ar71xx_mac_map", i, "offset",
&offset) != 0)
break;
if (resource_int_value("ar71xx_mac_map", i, "is_local",
&is_local) != 0)
break;
printf("ar71xx: devid '%s.%d', MAC offset '%d'\n",
devid, unitid, offset);
(void) ar71xx_platform_set_mac_hint(devid, unitid,
ar71xx_board_mac_addr, offset, is_local);
}
return (0);
}
extern char cpu_model[];
void
platform_start(__register_t a0 __unused, __register_t a1 __unused,
__register_t a2 __unused, __register_t a3 __unused)
{
uint64_t platform_counter_freq;
int argc = 0, i;
char **argv = NULL, **envp = NULL;
vm_offset_t kernend;
/*
* clear the BSS and SBSS segments, this should be first call in
* the function
*/
kernend = (vm_offset_t)&end;
memset(&edata, 0, kernend - (vm_offset_t)(&edata));
mips_postboot_fixup();
/* Initialize pcpu stuff */
mips_pcpu0_init();
/*
* Until some more sensible abstractions for uboot/redboot
* environment handling, we have to make this a compile-time
* hack. The existing code handles the uboot environment
* very incorrectly so we should just ignore initialising
* the relevant pointers.
*/
#ifndef AR71XX_ENV_UBOOT
argc = a0;
argv = (char**)a1;
envp = (char**)a2;
#endif
/*
* Protect ourselves from garbage in registers
*/
if (MIPS_IS_VALID_PTR(envp)) {
for (i = 0; envp[i]; i += 2) {
if (strcmp(envp[i], "memsize") == 0)
realmem = btoc(strtoul(envp[i+1], NULL, 16));
else if (strcmp(envp[i], "bootverbose") == 0)
bootverbose = btoc(strtoul(envp[i+1], NULL, 10));
}
}
bootverbose = 1;
#ifdef AR71XX_ENV_ROUTERBOOT
/*
* RouterBoot informs the board memory as a command line argument.
*/
if (realmem == 0)
realmem = ar71xx_routerboot_get_mem(argc, argv);
#endif
/*
* Just wild guess. RedBoot let us down and didn't reported
* memory size
*/
if (realmem == 0)
realmem = btoc(32*1024*1024);
/*
* Allow build-time override in case Redboot lies
* or in other situations (eg where there's u-boot)
* where there isn't (yet) a convienent method of
* being told how much RAM is available.
*
* This happens on at least the Ubiquiti LS-SR71A
* board, where redboot says there's 16mb of RAM
* but in fact there's 32mb.
*/
#if defined(AR71XX_REALMEM)
realmem = btoc(AR71XX_REALMEM);
#endif
/* phys_avail regions are in bytes */
phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
phys_avail[1] = ctob(realmem);
dump_avail[0] = phys_avail[0];
dump_avail[1] = phys_avail[1] - phys_avail[0];
physmem = realmem;
/*
* ns8250 uart code uses DELAY so ticker should be inititalized
* before cninit. And tick_init_params refers to hz, so * init_param1
* should be called first.
*/
init_param1();
/* Detect the system type - this is needed for subsequent chipset-specific calls */
ar71xx_detect_sys_type();
ar71xx_detect_sys_frequency();
platform_counter_freq = ar71xx_cpu_freq();
mips_timer_init_params(platform_counter_freq, 1);
cninit();
init_static_kenv(boot1_env, sizeof(boot1_env));
printf("CPU platform: %s\n", ar71xx_get_system_type());
printf("CPU Frequency=%d MHz\n", u_ar71xx_cpu_freq / 1000000);
printf("CPU DDR Frequency=%d MHz\n", u_ar71xx_ddr_freq / 1000000);
printf("CPU AHB Frequency=%d MHz\n", u_ar71xx_ahb_freq / 1000000);
printf("platform frequency: %lld MHz\n", platform_counter_freq / 1000000);
printf("CPU reference clock: %d MHz\n", u_ar71xx_refclk / 1000000);
printf("CPU MDIO clock: %d MHz\n", u_ar71xx_mdio_freq / 1000000);
printf("arguments: \n");
printf(" a0 = %08x\n", a0);
printf(" a1 = %08x\n", a1);
printf(" a2 = %08x\n", a2);
printf(" a3 = %08x\n", a3);
strcpy(cpu_model, ar71xx_get_system_type());
/*
* XXX this code is very redboot specific.
*/
printf("Cmd line:");
if (MIPS_IS_VALID_PTR(argv)) {
for (i = 0; i < argc; i++) {
printf(" %s", argv[i]);
parse_argv(argv[i]);
}
}
else
printf ("argv is invalid");
printf("\n");
printf("Environment:\n");
if (MIPS_IS_VALID_PTR(envp)) {
for (i = 0; envp[i]; i+=2) {
printf(" %s = %s\n", envp[i], envp[i+1]);
kern_setenv(envp[i], envp[i+1]);
}
}
else
printf ("envp is invalid\n");
/* Platform setup */
init_param2(physmem);
mips_cpu_init();
pmap_bootstrap();
mips_proc0_init();
mutex_init();
/*
* Reset USB devices
*/
ar71xx_init_usb_peripheral();
/*
* Reset internal ethernet switch, if one exists
*/
ar71xx_reset_ethernet_switch();
/*
* Initialise the gmac driver.
*/
ar71xx_init_gmac();
/* Redboot if_arge MAC address is in the environment */
(void) ar71xx_redboot_get_macaddr();
/* Various other boards need things to come out of EEPROM */
(void) ar71xx_platform_read_eeprom_mac();
/* Initialise the MAC address hint map */
ar71xx_platform_check_mac_hints();
kdb_init();
#ifdef KDB
if (boothowto & RB_KDB)
kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
#endif
}